`return {}` doesn't work for dcc.Graph?

[chriddyp]

See commuity discussion here: https://community.plot.ly/t/returning-an-empty-figure/12500/2

[chriddyp]

another one here: https://community.plot.ly/t/help-once-set-the-graph-return-none-the-graph-wont-update-anymore-even-when-get-new-data/12925

[rmarren1]

I am getting this in some apps too.

A front-end exception is thrown on this line:

dash-core-components/src/components/Graph.react.js

Line 83 in de74f62

pluck('type', figure.data),

giving this vague error:

I am not sure why fantasy-land is being used rather than the internal map method in ramda, do we import it anywhere?
I think this is just because figure.data is undefined and pluck tries to access the type attribute.

I think this can be fixed for free when we fix plotly/dash#355

[rmarren1]

Some more reports:
https://community.plot.ly/t/javascript-error-fantasy-land-map-undefined/9863

https://community.plot.ly/t/problem-with-dash-app-fantasy-land-map/9797

https://community.plot.ly/t/cannot-read-property-fantasy-land-map-of-undefined-dash-datatable-updating-table-with-dropdowns/12958 / https://stackoverflow.com/questions/51992151/cannot-read-property-fantasy-land-map-of-undefined-dash-datatable-updating-tab <-- not sure about this one, as it does not use Graph

[rmarren1]

Released in dash-core-components==0.28.1